Stereo headset amplifier enables responsive user controls

• The TS4601 optimized for feature-phone applications, improves audio performance, extends battery life and enables more responsive user controls compared to existing solutions.

• Its class-leading power-supply rejection ratio of –107dB (typical) prevents noise from the handset battery from reaching the audio output. As a result, the overall audio quality provided is close to that of a dedicated hi-fi system, while savings in overall current consumption allow end products to provide longer listening times and more functions for a given battery size.

• The low-profile flip-chip package measuring 2.1x2.1x0.6mm allows designers to take advantage of the TS4601’s enhanced features to create sleek, high-end mobile handsets offering advanced music features.

• Can be used in many other portable and consumer products demanding high audio capabilities and system-level performance advantages, including MP3 players and notebook computers.

• User functions and configuration control are managed via the device’s built-in I²C interface, enabling enhanced flexibility and an improved user experience compared to other devices on the market.

• Ease of use and versatility are further enhanced since the TS4601’s output is stable under all load conditions, which allows dependable glitch-free operation whether the user is listening via the headset or to an external hi-fi, via the phone output.

• Features a built-in common-mode sensing that automatically compensates for variations in headset characteristics, such as different grounding properties that may otherwise produce increased noise. Thermal shutdown and short-circuit protection are also embedded, providing mobile users with safety features typically implemented in dedicated audio equipment.

• The TS4601 is priced at USD1.30 in quantities of 1,000 upwards.